Clutch



May 1-9, 1925. 1,538,6oo

R. w. sTRoUT' i CLUTCH Filed July lo' 1924 y C mm mnh NVENTOR Patented May 19, 1925.

rms-Nr orsi-cia.

ROBERT W. sTROU'r,OFBROOKLYMNEW YORK, Assrenoemofn. `Bussooivrrerm OF BROOKLYN, Nnw .Yon-K, e. CORPORATION :Onweer mnemm.

To all w 710m, it may concer/m:

'lite it'lnownthat l, Rlmnn'r WV. 'STROUL a: cxtlze'n 'of the 'United-'States otAineric'a, re-

siding in the borough of lfroollyn` ',cou'nty.

fof` Kings, `city and State olf New York, have iniented certain new andnSefiJ'l Iniprov'ements in Clutches, of "which the follow ngis a specification.

:rims to 'provide 'improvements therein.

The present 'invention 4is an improvement )inthetype fof clutch shown and 'described in iny `lf)a"ten't.No. l481,444;,'antl others', with 'regard ,particularly to the means applying spring tension "to the @hitch-pin for llo'clrirrg the latter inzinopera'tfe "position, and =provitles a simple and reliable y:Ine'ans for lthisprp'ose. A o Forja particular description of th'e invention, rference 'is "made, "to 'the aocoimpianying drawings, in Which'-L l "Figure l "is a Vertical "longittli-nal ,View (jjrtljr in 'section "and oartlyin elevation) 'of "portions )df A'the driving' and driven Eparts of ,a 'press and fof the clt'ch` and incorpo- "lrlating the present "improvements,

Fig. 2 is an end elevation (with part of the oil ring broken away!) "of fthe parts shown inFig. l1; l

rigs. as and 4 are respectively side and end Views Ot "a "part gotfthe fcliit'ch;

Fig. 5 is an enlarged diagrammatic "View for illustrating the positions of the Tc'liitch :part-s. Fig. 6 is ia modified form of shown inFigs. 3 'and 4, "The clu'tch conrprisesan oscillati'nfgleyfor pin A` carried by crank-sliaift"-B,faiid `t ed fr@ te `Cenne@"tra ,to and disconnected yifm-fn a *fly-Wheel C tfuriing Von said crank#sh'ait3 by'the turningfof said llze'y or pfin A. JI lplhe turning :of *the key A vin on'e direction (to -tlecl`i1tcliing position)` lis eilected throughY an arni "or `tail-pice D, Whille turninffhereof in jtlie opposite direction f('to clutch) yis efrh apart fected bya `spring E, reactingbetween an Y.

anhorpiece G and 1th,@ 4Said pinA- The spring E 'is 'preferably 'ja coil spring,

housed in a bore I in the otrte'r 'end "of `the crankshaft B,coaXialWith .the said pin A,

This 'invention relates "to, "chitches 'and freniently `reduced anti slotted, asginfdioated 'at ty l to receive. andholdftheends e e lot the springl. ,y l

The anchorp-ieee G 11s adaptedjto be moved lto tens-Ion the sprngE 'indonje direciently has a cylindrical portion g Whichjts `'ixiithinthehorel 4'and maybe tirrnefd on its being "threaded in theou'ter ,wall 'of said shaft B and extending'intoead slot.

The circ'l'iniferential "slot M'has a length "anchor-piece suiiicie'nt I'to "reverse the 'torsional 'stress ofi said spring E an'dtofproiide U for a positivetorsioriail stress Tof s'aij'd spring in 'opposite dire,ctions`an'd sdiiici'en't alsofto recesses P, iQ, these *recesses 'conveniently extendmg @many of 'the anohforspece s G `and ran-ged to react by 'compression (or exten- P, @,gcould, however, be arranged cireunji- L Yfereritiallfy,in ajpll'ane different Ifrom tllftijf y 'the s'lot M, fas indicated atP, Fig. '6, and

ythe spring Ere'a'ct by torsion flto seat said pin in said recesses.' Y, t i

l," ',To Iturn"the ancll'forpie'ce@thesaid piece G i-st pressed axially or "inward against 'the "compressive vreaction O't said' spring E jsticientljy `to bring ,p'inN ont of thes'lts in line `With fthe circnnfere'ntial siotM, andgthentufrned. y l l Arr 'suitable ,for ruiming fthe ieee G fniay'be provided. ,To 'avoid projectl ,anchor-piece is Ypreferahly `provided with a fpolygqnal "socket 'adapted fito' receive the of a, 'correspondingly shaped wrench which is 'inserted 'and removed from fsa-id socket. i i

Operation: Referring to Fig. 5, the clutch pin A is shown in normal position when the press is not running; that'is, the clutch toV wit, through approximately 90.

pin is held out ofclutching `position by the engagement of a suitable part of the clutchoperatiiig mechanism with the arm or tailpiece D (Fig. l) on said pin. The pin N is in the bottom of recess Q, and the spring E liasbeen stressed torsionallv to react in a counterclockwise direction, the anchorpiece G having been turned from a position where the spring-engaging slot Z therein was in line with the line marked Neutral, Fig. 5,`to the position shown in that iiguile, T ie clutch pin A has a rocking movement to the position indicated by dotted line V, Fig. 5, in turning to clutching position and consequently the Atorsional stress isr relaxed to this extent when the clutch pin Aturnsto clutching position ;'V thatis, the tension is relaXedv about of a turn. This leaves a torsional stress corresponding to about 45o of a turn for holding the clutch pin A under tension in clutching` position.

To lock the clutch pink A` in unclutching positionv (as is customary in setting dies in a press) it is necessary to hold'the clutch pin A in the position shown in full lines in Fig. 5. This is done by pressing the an- Chor-.piecey Gr axially against the compression or torsional reaction of spring E, as the case may be, so that the pin `N moves out ofthe recess Q and into the circumferential slot M, whereupon the anchor-piece G is turned in a clockwise direction (looking at it from the end or right` in Fig. l), the torsional stress of the` spring E being completely relaxed when the astening'slot L reaches the line marked Neutral, and setting up an opposite torsional stress. when turned beyond this line. When the anchorpiece G has been turned `clockwise sufficiently for the piny N to kenter the recess P, the slotZ in said anchor-piece G will have moved 45 of' a turn clockwise beyond the neutral point anda corresponding tor- I.sional stress set up in the spring tending to turn the clutch-pin A clockwise, that is,

in a direction away from clutching position. By allowing the spring E to react (by compression or torsion) it acts to press .the anchor-piece G outwardly (or otherwise) in a direction to eect the engagement of the pin N in recess P, and thereby lock the said anchor-piece G against turning. Consequently, through the torsional stress of the spring acting4 between said anchor-piece and clutch-pin,the` clutch-pin A is eifectively locked in declutching'position. l 4

The degrees specifically mentioned'are illustrative of the actual construction. A

, greater or less degree of turn could be given 1,5se,cco

,the spring under teiision,.said spring acting to press said anchor-piece into engagement with its'locking means.

2. A clutch comprising an oscillating clutch-pin orkey, a spring, and an anchoriece said s ring being attached to said 9 i, ED

clutch pin and anchor-piece, said anchorpiece being movable to tension said spring in opposite directions, whereby the tensionon said clutch-pin may be reversed. means for locking said anchor-piece with the spring under tension in either position of ysaid ,anchor-piece, said spring acting to press said anchor-piece into engagement with its locking means. l 4

3. A clutch accordingto claim 2, in which said locking means comprises a pin and recessesin which` said pin engages in the positions of said anchor-piece in which said spring is tensioned.: Y

4. A clutch according to claim .1, in which `said spring is a combined torsion and compression (or extension) spring, and acting by torsional stress upon said clutch-pin and by compression reaction upon said locking means. f

. 5. A clutchaccording to claim 2, in which said springis a combined torsion and lcompression (or extension) spring, and acting by torsional stress upon said clutch-pin and by compression `reaction upon said locking l means.

6. A clutch comprising an oscillating clutch-pin or key, a. spring, andan anchorpiece, said spring being attached to said clutch-pin and anchor-piece, said anchor piece being rotatable to tension said springr with a torsional stress, means for locking' said anchor-piece with the spring under torsional stress, said spring also being` adapted to react by compression (or extension) to. oppose disengagement of said locking means, said anchor-piece being'rotatable to tension said spring in two directions, wherebyy the tension on said clutch-pin may be f reversed.

In witness whereof, I have hereunto signed my name.

ROBERT wsrRoUT. 

